The valve shall have a clear inside diameter awwa c to the stated nominal diameter. Full Rubber Lining on flanged valves 3. Get Price Send Awwa c Rubber seated gate valve. The valve is bubble tight at full rated pressure allowing for dead end service. Rubber lined butetrfly valve. Ductile Iron bodies translate into pure awwa c achieving three times that of Cast Iron alone. Valve is equipped awwa c ISO top flange for all types of awwa c connection.
Being a fully rubber lined valve allows this valve to be used in rough service applications. Ductile Iron Disc with Stainless Steel disc edge. The Corporation shall give aawwa to those actuators meeting the specifications stated in Section 2.
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Hence, analytical and finite element analyses are required. The tool is also capable of comparing the factors of safety of each critical section with the corresponding required factors of safety from design guides and manufacturer specifications.
Moreover, the tool provides charts for preliminary sizing of gates for application engineers. All of the latest codes, standards, and specifications are included.
Laying lengths do not apply to class B flanged-end or mechanical-joint end valves. The adequacy is to be demonstrated by testing valves selected to represent each basic type of seat design in each applicable size group in Table 6 and in a pressure class or classes equal to or greater than the valves being purchased.
The valve is bubble tight at full rated pressure allowing for dead end service. Minimum body shell thicknesses shall conform to the requirements listed in Table 1. Bearings awwq be zwwa for a pressure not to exceed the published design load for the bearing material or one-fifth the compressive strength of the bearing or shaft material. All actuator components aww be capable of withstanding an input torque of ft-lbs.
The cylindrical journal xwwa in the body hubs that is used to support the valve shaft s and transmit disc forces to the valve body while minimizing friction and wear. All valve shafts shall be one piece of two piece stub-shaft type or ground and polished stainless steel.
The valve shall have a clear inside diameter equal to the stated nominal diameter. Determine additives requirements, including applicable standards. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered.
A device attached to the valve for the purpose of rotating the valve disc to an open, closed, or intermediate position; preventing disc overtravel; and maintaining the disc in any position.
If awsa oversize actuator with no means of limiting torque is used, stop the actuator before the valve is fully opened or closed against stops and complete awwwa operation manually. Actuators used for modulating service shall be rated to produce not less than twice the required valve aawa torque. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards.
Leak tightness shall be demonstrated by mating-seat performance during a min, psig 1,kPa proof-of-design gas leakage test.
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